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LP3855EMP-ADJ
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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+41@@ -0,0 +1,41 @@+# LP3855EMP-ADJ++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-5++LP3855EMP-ADJ from Texas Instruments, in a SOT-223-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SD | input | Shutdown input: a CMOS logic low turns the regulator off, the pin must be tied to VIN if unused, and its operating voltage range is -0.3V to 7.0V. |+| 2 | VIN | power_in | Input supply with an operating range of 2.5V to 7.0V; the minimum VIN is the greater of VOUT(NOM) + VDROPOUT or 2.5V, and a input capacitor of at least 10µF is required. |+| 3 | VOUT | power_out | Regulated output with a survival range of -0.3V to +6.0V, which requires an output capacitor of at least 10µF connected directly to the output and ground pins for loop stability. |+| 4 | ADJ | input | Output voltage set pin, referenced to a typical 1.216V, with VOUT = 1.216 x (1 + R1/R2) and a typical input bias current of about 10 nA. |+| 5 | GND | power_in | Ground pin, to be connected to the external circuit ground as a single point ground with the input and output capacitor returns. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-223-5 |+| Category | Power Management (PMIC) |+| Pins | 5 |++## CAD (KiCad official)++- Symbol: `LP3855EMP-ADJ`+- Footprint: `Package_TO_SOT_SMD:SOT-223-5`+- 3D model: SOT-223-5, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm nominal SOT height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `lp3855emp-adj-etched.step` / `lp3855emp-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp3855emp-adj.step` / `lp3855emp-adj.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lp3855-adj) (23 pp, sha256 `d1610e06156c9fbe`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lp3855emp-adj-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lp3855emp-adj",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lp3855emp-adj.kicad_sym",+ "lp3855emp-adj.kicad_mod",+ "lp3855emp-adj.glb",+ "lp3855emp-adj.step",+ "lp3855emp-adj.lbr",+ "docs/hero.png",+ "docs/lp3855emp-adj-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lp3855emp-adj-hero.glb",+ "lp3855emp-adj-hero.overlay.json"+ ],+ "component": {+ "mpn": "LP3855EMP-ADJ",+ "manufacturer": "Texas Instruments",+ "package": "SOT-223-5",+ "pin_count": 5,+ "category": "Power Management (PMIC)",+ "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lp3855-adj",+ "parts": {+ "symbol": "lp3855emp-adj.kicad_sym",+ "footprint": "lp3855emp-adj.kicad_mod",+ "model_3d": "lp3855emp-adj-hero.glb",+ "model_3d_plain": "lp3855emp-adj.glb",+ "model_3d_step": "lp3855emp-adj-etched.step",+ "model_3d_step_plain": "lp3855emp-adj.step",+ "lbr": "lp3855emp-adj.lbr"+ },+ "distributor_links": {+ "lcsc": "C2867452",+ "digikey": "LP3855EMP-ADJTR-ND",+ "mouser": "926-LP3855EMP-ADJ"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T16:45:38Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LP3855EMP-ADJTR-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LP3855EMP-ADJ",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "SD",+ "type": "input",+ "description": "Shutdown input: a CMOS logic low turns the regulator off, the pin must be tied to VIN if unused, and its operating voltage range is -0.3V to 7.0V."+ },+ {+ "number": "2",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply with an operating range of 2.5V to 7.0V; the minimum VIN is the greater of VOUT(NOM) + VDROPOUT or 2.5V, and a input capacitor of at least 10µF is required."+ },+ {+ "number": "3",+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output with a survival range of -0.3V to +6.0V, which requires an output capacitor of at least 10µF connected directly to the output and ground pins for loop stability."+ },+ {+ "number": "4",+ "name": "ADJ",+ "type": "input",+ "description": "Output voltage set pin, referenced to a typical 1.216V, with VOUT = 1.216 x (1 + R1/R2) and a typical input bias current of about 10 nA."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin, to be connected to the external circuit ground as a single point ground with the input and output capacitor returns."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pinout taken from Table 2 (PIN DESCRIPTIONS for SOT-223-5 Package) on page 2. The SOT-223 pin-1 orie; SOT-223 pin order differs from the TO-220-5 and DDPAK/TO-263-5 order (GND is pin 3 there, VOUT pin 4; The datasheet gives no per-pin electrical limits beyond the absolute maximum and recommended operati"+ ],+ "pages_sent": 23,+ "cost_usd": 0.0914,+ "at": "2026-10-08T16:45:19"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lp3855-adj",+ "pages": 23,+ "sha256": "d1610e06156c9fbe",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 5,+ "described": 5,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "lp3855emp-adj.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.46,+ 6.7,+ 1.45+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "303a588e063ee450c42bc37d35c4f987245ba1c702bba0751cfa05d7e5908d79",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lp3855emp-adj-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.46,+ 6.7,+ 1.45+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "b925efd2b7708c975eeb0a5cf69bea21a6287321646b9b8ebf43d701ce587d9a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}